linux-cookbook/src/kernel.md

Notes about the Linux Kernel

Kernel modules

How to list all loadable kernel modules?

Source: StackExchange

Question: How do I list all the available modules in the system? In which directory are they located?

By default modprobe loads modules from kernel subdirectories located in the /lib/modules/$(uname -r) directory. Usually all files have extension .ko, so you can list them with

find /lib/modules/$(uname -r) -type f -name '*.ko'

or, taking into account compressed files:

find /lib/modules/$(uname -r) -type f -name '*.ko*'

Each module can be also loaded by referring to its aliases, stored in the /lib/modules/$(uname -r)/modules.alias (and modules.alias.bin).

However, to load a modules successfully modprobe needs their dependencies listed in the file /lib/modules/$(uname -r)/modules.dep (and a corresponding binary version modules.dep.bin). If some module is present on the system, but is not on the list, then you should run a command depmod which will generate such dependencies and automatically include your module to modules.dep and modules.dep.bin.

Additionally, if the module is successfully loaded it will be listed in the file /proc/modules (also accessed via command lsmod).